echo "ubuntu" | sudo -S chmod 777 `ls /dev | grep ttyUSB`
cd ~/catkin_ws
source ~/catkin_ws/devel/setup.bash
catkin_make
roslaunch ~/catkin_ws/src/navigation/launch/smartcar_drive.launch
#rosrun sensor_imu  sensor_imu_node
#roslaunch smartcar_description smartcar_display.rviz.launch  
